Radius is half d so r us 4.5
Formula is 2x pi x r
So 28.3 to 3 s.f.
5m+2n-7-2m+15
Combine all like terms.
3m+2n+8
Answer:

Step-by-step explanation:
If the initial number is n, one less than n is n - 1, and one more than n is n + 1. so we have:

At first I thought this answer was too easy, so I tried for n is 6.

This is really cool! Hope this helps!
Answer: the one on the top right
Step-by-step explanation:
12 yards
if each yard costs 3 dollars
then 12 x 3 = 36 dollars
she can buy a maximum of 12 yards